It looks to me as if these are the same strings that are selling for $12.99 out of Calif. that come from India.

I tried the Cali strings. Out of four packs three broke during stringing. The fourth pack and the other broken packs I sent back to them with only getting the one pack price refunded to me. I took them to a professional stringer to get them strung so it wasn't a "home stringer" doing the breaking. The strings were very dry and brittle. Just my experience with them.
Now I just buy the main name gut sets. The cheap ones are more expensive in the long run.

Sorry I meant can't find it for sale on the bay, and there contact page doesn't seem to work on the above link

Performaxx supply can usually be found on the bay, but it is not very steady. You should just keep checking on the bay and eventually you'll find some available. If you don't snap them up, they'll eventually be snapped up soon and there may be a while before some more are posted for sale on the bay again. That's why if I'm low on supply I keep an eye out for them and when I see them, I'd snap up enough supply to last me a while.

Performaxx strings are definitely not low quality type gut. I have them strung currently on 5 of my rackets now (and probably have strung up and used nearly a dozen sets by now) and they perform very well and last a long time for me. None of them ever broke while stringing (although I usually string them at around 55 lbs only and not higher, and always string a full bed of gut), and they have a clear coating on them that helps make stringing a little easier. That's the other thing about them, all the coating is clear so any imperfection is not visually hidden from you.

A set of 40' runs around $26, but if you buy a pack of 3, each set is around $23. Sometimes there are "2nd quality" sets available in pack of 3 for around $18/set. They may have a little bit of visual imperfection on them, but functionality they seem to play just the same to me. I think these "2nd quality" sets gives you the best value at that price.

I've only used Performaxx and Boris Becker Hero guts before so I can't compare these with Babolat or Wilson or Klip. But I prefer the Performaxx string over the Becker Hero string. The Becker Hero string felt crisper to me while the Performaxx feels softer. Also, the coating on the Becker Hero is not clear so I can't see what the gut looks like inside.

I tried the Cali strings. Out of four packs three broke during stringing. The fourth pack and the other broken packs I sent back to them with only getting the one pack price refunded to me. I took them to a professional stringer to get them strung so it wasn't a "home stringer" doing the breaking. The strings were very dry and brittle. Just my experience with them.
Now I just buy the main name gut sets. The cheap ones are more expensive in the long run.

The Cali gut has worked flawlessly so far for this home stringer.

I like it better than the Global Gut. Never tried the performaxx, but it looks to be about the same as the India stuff to me.

I wish Bow brand was not so expensive. Bow brand was my all time favorite gut. Played THE best of all the guts I had used before. At one time Bow brand was $10 less than any other gut so it was a double ++ for me. Since Bow was out of the tennis string business for a while I am not sure if their strings would be as good as before. Seems like some of these gut companies ( Babolat) like to constantly tinker with their gut recipe. I found Bow somewhere on the internet but I think it was from UK. Shipping was a bear for a package of it. Maybe I'll look and see if it is available here in the USA.

Bow has a single authorized distributor in the USA who sells through their own site as well as e-b-a-y. I have had no issues with supply, but we are probably looking at a pretty small universe with this string.

The Championship is still my favorite and quality is top-notch, as always. Bow has historically been one of the most durable guts, even at extremely thin gauges (18g Championship), and this is still the case. Yes, it is comparatively expensive.

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I wish Bow brand was not so expensive. Bow brand was my all time favorite gut. Played THE best of all the guts I had used before. At one time Bow brand was $10 less than any other gut so it was a double ++ for me. Since Bow was out of the tennis string business for a while I am not sure if their strings would be as good as before. Seems like some of these gut companies ( Babolat) like to constantly tinker with their gut recipe. I found Bow somewhere on the internet but I think it was from UK. Shipping was a bear for a package of it. Maybe I'll look and see if it is available here in the USA.

Yes, I remember the day. I never tried Bow Brand, mainly I think because BDE was also a "value" priced alternative and I used it quite a bit in lieu of Bow.

I tried the Cali strings. Out of four packs three broke during stringing. The fourth pack and the other broken packs I sent back to them with only getting the one pack price refunded to me. I took them to a professional stringer to get them strung so it wasn't a "home stringer" doing the breaking. The strings were very dry and brittle. Just my experience with them.
Now I just buy the main name gut sets. The cheap ones are more expensive in the long run.

I had the same experience stringing on a Prince mp-100 hydraulic stringer.